diff -r c2974244a496 -r aa289b22b577 hotspot/src/share/vm/runtime/biasedLocking.cpp
--- a/hotspot/src/share/vm/runtime/biasedLocking.cpp	Fri Jun 05 10:25:39 2009 -0700
+++ b/hotspot/src/share/vm/runtime/biasedLocking.cpp	Tue Jun 09 16:19:10 2009 -0700
@@ -121,6 +121,7 @@
         // Walk monitors youngest to oldest
         for (int i = len - 1; i >= 0; i--) {
           MonitorInfo* mon_info = monitors->at(i);
+          if (mon_info->owner_is_scalar_replaced()) continue;
           oop owner = mon_info->owner();
           if (owner != NULL) {
             info->append(mon_info);
@@ -694,6 +695,7 @@
           // Walk monitors youngest to oldest
           for (int i = len - 1; i >= 0; i--) {
             MonitorInfo* mon_info = monitors->at(i);
+            if (mon_info->owner_is_scalar_replaced()) continue;
             oop owner = mon_info->owner();
             if (owner != NULL) {
               markOop mark = owner->mark();